Adjusted private endpoint setup delay to 30s.

The original 10s delay was not sufficient to guarentee the propagation
of the private dns names throughout AWS's infrastructure.  Adjusting it
to 30s to try and make it more reliable.  90% of the time, we ended up
needing to wait for 5m+ due to negative cacheing.

utils/awscontrol/privateendpointscontroller.go

@@ -160,7 +160,7 @@ func (c *PrivateEndpointsController) EnableVPCEndpointPrivateDNS(ctx context.Con
 
 	// its safer for us to sleep here for 10s than to accidentally fetch the DNS
 	// entry before its been propagated and then need to wait 5m for it to update.
-	time.Sleep(10 * time.Second)
+	time.Sleep(30 * time.Second)
 
 	return nil
 }